Roads/Highways

The 58.5-mile long Highway 101 corridor from the Bay Bridge to the SR 85/US-101 interchange in South San Jose accommodates just over 2.6 million trips on an average weekday. Travel delays on the US-101 corridor over the 2012-2016 five-year period increased by more than 91% (an average delay increase of over 18% per year). Given that California’s economy recently grew to become the sixth largest in the world, this waste of time stuck in traffic ranks among the most consequential economic inefficiencies in the world; workers in this region produce about 15 percent of California’s annual...

This document is the final report for Task ID 3710 (65A0759), a project titled “Potential Erroneous Degradation of High Occupancy Vehicle (HOV) Facilities”. This report contains a compilation of three previous technical memorandums titled “Survey of Data-Mining Methods”, “Performance of Methods”, and “Magnitude of HOV Degradation”. HOV lane sensors in Caltrans’ Performance Management System (PeMS), are sometimes misconfigured as general-purpose lanes. In this situation, HOV lane data is mistakenly aggregated with general-purpose lane data and vice versa. The purpose of this project was to...

This report presents an evaluation of the first transit-based smart parking project in the U.S. at the San Francisco Bay Area Rapid Transit (BART) District station in Oakland, California. The report begins with a review of the smart parking literature; next the smart parking field test is described including its capital, operational, and maintenance costs; then the results of the participant survey analysis are presented; and finally lessons learned from the institutional, user, and operational perspective are documented. Some key changes in participant travel behavior include increases in...

This is the final report for MOU 313, "Lateral Control of Heavy Vehicles for Automated Highway Systems". It address the following task items: Analysis and synthesis of control algorithms based on system identification and calibration results (Task 4. in the MPU), Closed loop results at highway speeds (Task 5), limits and persormance of sensors, actuators and control schemes as infered from data collected during closed loop experiments at 55 MPH (task 6) and baseline safety requirements based on closed loop data (task 7) Five controllers were designed based on the model identification study...